Practical Jewellery CAD Tutorial: Filling and smoothing gaps with 3D Coat

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Software: 3D Coat

In this, my very first free video tutorial (be kind!), I show how I use simple 3D Coat tools to fill and smooth the geometry of an STL mesh file originally created in Rhino.

The file used in the demo was kindly provided by Rhino expert Shahar Dahari and is in response to a tip on his excellent Facebook page "ממדלים ביחד-Jewelry CAD Tips". The particular thread concerns advice for minimising investment inclusions in castings by closing small holes. I offered to demo my personal approach using 3D Coat.

3D Coat is an excellent accompaniment to Rhino 3D, offering sculptural manipulation to your surface modelling. I teach its use in conjunction with Rhino 3D as part my interactive online CAD tuition and consultancy services. Feel free to direct message me if you're interested in learning or improving your CAD skills for practical design and manufacturing.

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Software links:
Rhino 3D - https://www.rhino3d.com/download
3D Coat - https://3dcoat.com/download/

As promised early in the video....

Investment inclusions - why it's a good idea to fill any small holes in your models:

If we don’t fill these holes, the negative space they leave behind during burnout is filled with investment. As molten metal enters the can, these small columns of investment come under tremendous pressure and shatter. These small pieces of investment are then free to float away and cause defects and cavities.